Sport Utility Rings have a unique wrap around design, are available in 1 inch and 30mm diameters, fits any scope size (low, medium or high) and come in stainlees or satin matte black.1" Standard Dovetail - Low Wrap-around design Manufactured from aircraft aluminum Maximum scope retention and twice the clamping area Exceptional clamping strength 1-inch diameter Standard "Weaver" dovetail and .22/Airgun dovetail are available Fits high scope size Hex-key included Stainless Steel finish1" Standard Dovetail - Medium1" Standard Dovetail - High 30mm Standard Dovetail - Low30mm Standard Dovetail - Medium30mm Standard Dovetail - High, See-Thru